|
LMZ14203H_1106 Datasheet, PDF (1/20 Pages) National Semiconductor (TI) – 3A SIMPLE SWITCHER® Power Module for High Output Voltage | |||
|
LMZ14203H
June 13, 2011
3A SIMPLE SWITCHER® Power Module for High Output
Voltage
Easy to use 7 pin package
Performance Benefits
â High efficiency reduces system heat generation
â Low radiated EMI (EN 55022 Class B compliant)(Note 5)
â No compensation required
â Low package thermal resistance
System Performance
TO-PMOD 7 Pin Package
30135686
10.16 x 13.77 x 4.57 mm (0.4 x 0.542 x 0.18 in)
θJA = 16°C/W, θJC = 1.9°C/W
RoHS Compliant
Electrical Specifications
â Up to 3A output current
â Input voltage range 6V to 42V
â Output voltage as low as 5V
â Efficiency up to 97%
Key Features
â Integrated shielded inductor
â Simple PCB layout
â Flexible startup sequencing using external soft-start and
precision enable
â Protection against inrush currents
â Input UVLO and output short circuit protection
â â 40°C to 125°C junction temperature range
â Single exposed pad and standard pinout for easy
mounting and manufacturing
â Low output voltage ripple
â Pin-to-pin compatible family:
LMZ14203H/2H/1H (42V max 3A, 2A, 1A)
LMZ14203/2/1 (42V max 3A, 2A, 1A)
LMZ12003/2/1 (20V max 3A, 2A, 1A)
â Fully enabled for Webench® Power Designer
Applications
â Intermediate bus conversions to 12V and 24V rail
â Time critical projects
â Space constrained / high thermal requirement applications
â Negative output voltage applications
Efficiency VOUT = 12V
100
95
90
85
80
VIN = 15V
75
VIN = 24V
VIN = 30V
VIN = 36V
VIN = 42V
70
0.0 0.5 1.0 1.5 2.0 2.5 3.0
OUTPUT CURRENT (A)
301356100
Thermal Derating VOUT = 12V, θJA = 16°C/W
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
-20
VIN = 15V
VIN = 24V
VIN = 42V
0 20 40 60
80 100 120 140
AMBIENT TEMPERATURE (°C)
30135678
Radiated Emissions (EN 55022 Class B)
80
Emissions (Evaluation Board)
70
EN 55022 Limit (Class B)
60
50
40
30
20
10
0
0 200 400 600 800 1,000
FREQUENCY (MHz)
30135691
SIMPLE SWITCHER® is a registered trademark of National Semiconductor Corporation
© 2011 National Semiconductor Corporation 301356
www.national.com
|
▷ |